/*
 * hkh-project
 * leafteamwork.blogspot.com
 * Tool: Netbeans 6.7.1 - SQL Server 2005
 */
package vn.com.hkh.action;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import vn.com.hkh.dto.UserDTO;
import vn.com.hkh.service.UserService;

/**
 *
 * @author chquyet
 */
public class LoginAction extends HttpServlet {

    private UserService us = null;

    @Override
    public void init() throws ServletException {
        super.init();
        us = new UserService();

    }

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String forward = "/view/login.jsp";
            String message = "";
            String action = request.getParameter("act");

            if (action == null || action.equals("")) {
                forward = "/view/login.jsp";
            } else if (action.equalsIgnoreCase("login")) {
                String _username = request.getParameter("username");
                String _password = request.getParameter("password");
                UserDTO _userDTO = us.authenticate(_username, _password);
                if (_userDTO == null) { 
                    message = "Login Error!";
                    forward = "/view/login.jsp";
                } else {
                    request.getSession().setAttribute("login", _userDTO);
                    forward = "/UserAction";
                }
            }


            RequestDispatcher rd = request.getRequestDispatcher(forward);
            rd.forward(request, response);
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
